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NEWTONIAN MECHANICS - Pressure

To study smart and ace your exams, you should study with the understanding of what you would be specifically tested on, and what are the expected learning outcomes as set by the GCE O-level Singapore Examinations and Assessment Board.

Below is some key information about “Pressure” as an O-level Physics exam topic, and the desired learning outcomes.

NEWTONIAN MECHANICS – Pressure

Mechanics is the branch of physics that deals with the study of motion and its causes.

The greatest contribution to the development of mechanics is by one of the greatest physicists of all time, Isaac Newton. By extending Galileo’s methods and understanding of motion and gravitation, Newton developed the three laws of motion and his law of universal gravitation, and successfully applied them to both terrestrial and celestial systems to predict and explain phenomena. He showed that nature is governed by a few special rules or laws that can be expressed in mathematical formulae. Newton’s combination of logical experimentation and mathematical analysis shaped the way science has been done ever since. Concepts of moments and pressure are introduced as consequences of a force.

Content

• Pressure
• Pressure differences
• Pressure measurement

Learning Outcomes

O-level Physics candidates should be able to:

• define the term pressure in terms of force and area
• recall and apply the relationship pressure = force/area to new situations or to solve related problems
• describe and explain the transmission of pressure in hydraulic systems with particular reference to the hydraulic press
• recall and apply the relationship pressure due to a liquid column = height of column × density of the liquid × gravitational field strength to new situations or to solve related problems
• describe how the height of a liquid column may be used to measure the atmospheric pressure
• describe the use of a manometer in the measurement of pressure difference

[Source: Above information is extracted from the Singapore Examinations & Assessment Board Singapore-Cambridge O-level Physics Syllabus 6091 for the Year 2022 – https://www.seab.gov.sg/docs/default-source/national-examinations/syllabus/olevel/2022syllabus/6091_y22_sy.pdf ]

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